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SM::ToLaTeX

Convert SimpleMarkup to basic LaTeX report format

Public Class Methods

l(str) click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 24
def self.l(str)
  str.tr('\', BS).tr('{', OB).tr('}', CB).tr('$', DL)
end
            
new() click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 45
def initialize
  init_tags
  @list_depth = 0
  @prev_list_types = []
end
            

Public Instance Methods

accept_blank_line(am, fragment) click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 139
def accept_blank_line(am, fragment)
  # @res << "\n"
end
            
accept_heading(am, fragment) click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 143
def accept_heading(am, fragment)
  @res << convert_heading(fragment.head_level, am.flow(fragment.txt))
end
            
accept_list_end(am, fragment) click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 123
def accept_list_end(am, fragment)
  if tag = @in_list_entry.pop
    @res << tag << "\n"
  end
  @res << list_name(fragment.type, false) <<"\n"
end
            
accept_list_item(am, fragment) click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 130
def accept_list_item(am, fragment)
  if tag = @in_list_entry.last
    @res << tag << "\n"
  end
  @res << list_item_start(am, fragment)
  @res << wrap(convert_flow(am.flow(fragment.txt))) << "\n"
  @in_list_entry[-1] = list_end_for(fragment.type)
end
            
accept_list_start(am, fragment) click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 118
def accept_list_start(am, fragment)
  @res << list_name(fragment.type, true) <<"\n"
  @in_list_entry.push false
end
            
accept_paragraph(am, fragment) click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 101
def accept_paragraph(am, fragment)
  @res << wrap(convert_flow(am.flow(fragment.txt)))
  @res << "\n"
end
            
accept_rule(am, fragment) click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 112
def accept_rule(am, fragment)
  size = fragment.param
  size = 10 if size > 10
  @res << "\n\n\\rule{\\linewidth}{#{size}pt}\n\n"
end
            
accept_verbatim(am, fragment) click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 106
def accept_verbatim(am, fragment)
  @res << "\n\\begin{code}\n"
  @res << fragment.txt.sub(/[\n\s]+\Z/, '')
  @res << "\n\\end{code}\n\n"
end
            
add_tag(name, start, stop) click to toggle source

Add a new set of LaTeX tags for an attribute. We allow separate start and end tags for flexibility

 
               # File rdoc/markup/simple_markup/to_latex.rb, line 84
def add_tag(name, start, stop)
  @attr_tags << InlineTag.new(SM::Attribute.bitmap_for(name), start, stop)
end
            
end_accepting() click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 97
def end_accepting
  @res.tr(BS, '\').tr(OB, '{').tr(CB, '}').tr(DL, '$')
end
            
escape(str) click to toggle source

Escape a LaTeX string

 
               # File rdoc/markup/simple_markup/to_latex.rb, line 64
    def escape(str)
# $stderr.print "FE: ", str
      s = str.
#        sub(/\s+$/, '').
        gsub(/([_\${}&%#])/, "#{BS}\\1").
        gsub(/\/, BACKSLASH).
        gsub(/\^/, HAT).
        gsub(/~/,  TILDE).
        gsub(/</,  LESSTHAN).
        gsub(/>/,  GREATERTHAN).
        gsub(/,,/, ",{},").
        gsub(/\`/,  BACKQUOTE)
# $stderr.print "-> ", s, "\n"
      s
    end
            
init_tags() click to toggle source

Set up the standard mapping of attributes to LaTeX

 
               # File rdoc/markup/simple_markup/to_latex.rb, line 54
def init_tags
  @attr_tags = [
    InlineTag.new(SM::Attribute.bitmap_for(:BOLD), l("\\textbf{"), l("}")),
    InlineTag.new(SM::Attribute.bitmap_for(:TT),   l("\\texttt{"), l("}")),
    InlineTag.new(SM::Attribute.bitmap_for(:EM),   l("\\emph{"), l("}")),
  ]
end
            
l(arg) click to toggle source
 
               # File rdoc/markup/simple_markup/to_latex.rb, line 28
def l(arg)
  SM::ToLaTeX.l(arg)
end
            
start_accepting() click to toggle source

Here's the client side of the visitor pattern

 
               # File rdoc/markup/simple_markup/to_latex.rb, line 92
def start_accepting
  @res = ""
  @in_list_entry = []
end
            
wrap(txt, line_len = 76) click to toggle source

This is a higher speed (if messier) version of wrap

 
               # File rdoc/markup/simple_markup/to_latex.rb, line 149
def wrap(txt, line_len = 76)
  res = ""
  sp = 0
  ep = txt.length
  while sp < ep
    # scan back for a space
    p = sp + line_len - 1
    if p >= ep
      p = ep
    else
      while p > sp and txt[p] != \s
        p -= 1
      end
      if p <= sp
        p = sp + line_len
        while p < ep and txt[p] != \s
          p += 1
        end
      end
    end
    res << txt[sp...p] << "\n"
    sp = p
    sp += 1 while sp < ep and txt[sp] == \s
  end
  res
end